EP 1706436 B1 20130904 - POLYMERISATION PROCESS
Title (en)
POLYMERISATION PROCESS
Title (de)
POLYMERISATIONSVERFAHREN
Title (fr)
PROCEDE DE POLYMERISATION
Publication
Application
Priority
- GB 2005000157 W 20050114
- GB 0401348 A 20040122
Abstract (en)
[origin: WO2005070976A1] A process for the copolymerisation of ethylene and an alpha-olefin having 7 to 10 carbon atoms in a fluidised bed gas phase reactor in the presence of a single site polymerisation catalyst comprises operating the process in condensed mode and wherein the amount of said alpha-olefin is maintained below that at which substantial condensation in the reactor occurs. The preferred alpha-olefin is 1-octene and the preferred single site polymerisation catalyst is a metallocene complex. By use of the process conditions of the present invention, higher alpha -olefins may be successfully employed in a gas phase process provided the amount of higher alpha -olefin comonomer is maintained below that at which substantial condensation occurs: Such operation is also dependent upon the operation temperature and the boiling point of the higher alpha-olefin and the process is particularly advantageous when performed in the presence of catalysts able to incorporate high levels of comonomers at low comonomer inventories.
IPC 8 full level
C08F 210/16 (2006.01); C08F 2/34 (2006.01); C08F 4/6592 (2006.01); C08F 10/00 (2006.01); C08F 4/659 (2006.01)
CPC (source: EP US)
C08F 10/00 (2013.01 - EP US); C08F 210/16 (2013.01 - EP US); C08F 2420/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005070976 A1 20050804; CN 1950403 A 20070418; CN 1950403 B 20101103; EP 1706436 A1 20061004; EP 1706436 B1 20130904; ES 2427977 T3 20131105; GB 0401348 D0 20040225; US 2007123665 A1 20070531
DOCDB simple family (application)
GB 2005000157 W 20050114; CN 200580008949 A 20050114; EP 05701923 A 20050114; ES 05701923 T 20050114; GB 0401348 A 20040122; US 58678105 A 20050114